Pike arrestina apparatus



Feb. 22 1927.

R. s. PERRY ET AL FIRE ARRESTING' APPARATUS Filed Aug. 25. 1925 2 Sheets-Sheet 1' INVENTOR s M;- ATTORNEY Feb. 22., 1927.

Filed Aug. 1923 2 Sheets-Sheet 2 INVENTORS Patented Feb. 22, 1927.

UNITED sra'rss nosnnr may AND ARN'Q W.-KARNOPIP, on NEW YORK, n. Y.

nInn-Annnsrme APPARATUS.

Application filed August 25, 1923. Serial No. 659,407.

Our invention" relates to processes for firearresting and mechanical fire-arresting devices and refers particularly to processes and devices of that character particularly suitable for employment with fumes carrying resinous orsticky materials. 1

Thenecessity for effective fire-arresting processes and for' 'mechanical fire-arresting devices in apparatus carrying streams of in flammable fumes is generally recognized, and processes and devices of this character are particularly desirable in the production of such materials as varnishes, lacquers, &c.,'

, in which the heat treatmentfof the combustible raw materials'necessary in the production ofithe-desired products causes the formation of. inflammable fumes which, at

the temperatures used in the heat treatment,

are liable to ignite and thus leadto the combustion and loss of the said raw materials and therefore makes it desirable'that the said inflammable fumes be controlled in devices tofprotect them from admixture with sufficient oxygenof the airto support combustion and that they be protected from the localized temperatures and flames of-the heat treatments and for all the above purposes that they be collected and conveyed away from the apparatus for heat treatment in suitable conduits and under induced suction. V

In-the production of varnish, for instance, the raw materials are employed in comparatively small quantities, each batch being heated in a kettle by means of direct fire,

this small individual.batchproduction being necessary underithe conditions of varnish formation. v V

The fumes produced ineach such operation are conveyed from the upper portion of the kettlesthrough conduits into the atmospherexor into devices for their further treatment of ingredient recovery or elimination of undesirable odors. V

For economy of construction and ease of operation, it is usually found desirable to,

convey the fumes from a series of such heatmg kettles into a manifoldmg condult, the

nanifolded fume streams being then fur:

ther conveyed foriirial disposition.

Fumes of this character are highly inflam- I mable, especially when mixed with quantities ores, and hence, itis evident that a fire originating in any portion ofthe thus combined devi'ce' maybe continued and sup,

tinually evolved fume and the admixture therewith of oxygen of the air drawing into the fume current by the induced suction, thus causing great damage and danger. H

To overcome this increased fire danger, it has been suggested that mechanical fire, arresting devices be introduced into each fume conveying conduit between the heating operate to cut off and isolate the particular PATENT oFFIc'EQ .ported by the raw materials and the conkettle and the manifold conduit which will unit in which the fire originates and in thus operating will also cut off from saidunit the induced draft in order to stop the withdrawal of oxygen oftlie air and to thereby smother and extinguish the fire.

In the-production of varnish, for instance, the raw materials are comprised largely of gumsfand resin oils, which, when heated,

evolve fumes carrying materials of a sticky nature and this property'of the heated fumes 7 must be considered in the construction of -mechanical fire-arresting devices for em' ployment'with such fumes.

Experiencehas shown that devices for this purpose comprising only a hinged door retained in open position by means of a l fusible chain orlink are liable to become partially,'or totally, inoperative because of closure'of the door upon the release of the retaining means and thereby continuing the induced draft to support combustion or causing it to close so slowly as not to pre-' vent the passage of ignited fumes through the. device and into the manifold andtheother connected fume conduit units. I

It is evident that the closure device must act effectively to entirely out off the draft to prevent air being indrawnto mix with the ignited mixture and must, act promptly and effectively to prevent thepas'sageof these moving ignited fumes and that a delay of operation,.though it may be slight, will defect the purposes for which the device is employed. r V p The device of our invention overcomes all ofv these. dangerous imperfections of roe-I chanical fire-arresting devices and presents a positive means for preventing the passage of ignited fumes beyond the device and pos jitive means for smothering a firelin that portion; ofthe turns p ro ucing compart till ment in which it originated and in that portion of the fiune controlling conduits anterior to the device or our invention.

In the accompanying drawings, illustrating modifications of the device 01' our invcn- 1 tion, similar lar numerals. a

Figure 1 is a vertical cross-section of one form of a device of our invention.

Figure 2 is a vertical cross-section of one form of a @device of our invention.

Figure 3 is a section through the line ti-53 of Fi ure 2 with the fume control cover in close/di position. a

The particular form of the device of our invention, shown in Figure 1, comprises a cylindrical iume chamber open at the bottom and'closed at the top by the cover 11 having the hand-hole 12. The flue chanr beris supported by theannular base 13, the inner fiice of which is inclined downwardly and centrally toward the opening let to which is attached a conduit 15, the jointure between the fume chamber and the base being of such acharacter as to prevent the es cape of fumes therethrough. The conduit 15 attached to, or carries means (not shown) by which an induced draft can be produced therein, the fumes, air and gases being thus drawn through the conduit 16 and the fume chamber 10, A conduit 16 connects the interior of the {tune chamber parts are designated by simi- 10 with a source of fume supply, not shown.

Pivotally attached at 17 to the arm 18, which is fixedly attached to the base 13, is a closure member comprising the arm 19 and the cOvcrproperQO. The tunic control cover is of such sire, shape and position that it willcompletely cover the opening 1 1 when it is in lowered position, as shown by the d tEand-daSh lines 19 and 20.

The drawing shows only one arm 18 and one arm 19, rut l prefer to cn'iploy two spaced arms 18 carrying a rod 17 to which are pivotally attached two arms 19 connected with the fume control cover 20 in a man ner similar to the construction shown in Figures 2 and 3. i

The book 21 carried by the top 11 carries the fusible link22, which, in turn, carries the weight 23, which, in turn, 's connected to the lip Eliot the arm 19, holding the fume control cover 20 in raised position and a llowing free passage of fumes through the pipe 16, into the tunic chamber 10 and outwardly through the opening 1%! and the con duit 15. i

When the device is in operation and the fulnesare in normal condition, they pass through the pipe 16, the chamber l0 and the conduit A moven nt through the device. In the event of theignition of the fumes, the heat thus generated melts he fus ble l nk 2 a ing the weight to ran with impact force upon to weight- 4d).

1;}, thus allowing jof their free the top of the fume control cover 19 and 26, causing it to drop and be positioned as shown in the dot-and-dash lines, thus completely covering the opening 14 and preventing the passage of the ignited fumes beyond the fume chamber 10 and stopping the action of the induced draft in that portion of the flue system in front of the cover 20.

The particular form of the device of my invention, shown in Figures 2 and 3, co1npriscs an entrance conduit 25 connected to the fame chamber 26, whichtin turn, is connccted to theexit chamber which is connected to the exit co1iduit28, the whole ,device beinginclined downwardly toward the exit conduits 26, for reasons described. later. Positioned within the fume chamber 26 and transversely thereof is a partition 29 havin an o ienin 30 whichextends down- H i h wardly to the bottom of the fume chamber. The partit on 29 attached to the walls oi; the turtle chamber and is supported by the annular angle-iron 31 which broken away at thebottoin portion of the chamber.

Fixedly attachedto the upper portion of a completely cover the opening 30 of the partition 29, preventing the passage of fumes from the fume chan'iber 26 into the exit chamber 27. i i

A wire 36 attached to the wall of the fume chamber 26 is connected tothe fusible link 37 whiclnin turn, is connected to the wire 38 passing over the idler 39, the other extremity of the wire 38 being connected A wire 11 is attached to the rod 83 and the weight 40, and another wire 12 is attached to the bolt 43 of the covor andthe weight 10. t

The several described elements are so positionedas to hold the fume control cover in raised open position, as shown in Figtion of the fume chamber tlnroughthe opening 30 and thence outwardly. If the entering lj'ulncs becon'ic ignited, the heat thus gcnerated will melt the fusible: link 37, allowing the weight 40 to fallwithin'ipac't force upon the top of the fame control. cover causing it to drop and be positioned as shown in the dot-and-dash lines in Figure 2, thus a completely covering the opening 30 and preventing the passage of the ignited fumes beyond the fume chamber 26 and stopping the action of induced draft in that portion of the flue system in front of the cover 35.

In order to give access to the device, the side of the fume chamber 26 carries an opening 44, upon each sideof which is a slide guard 45, Within Which the cover 46 having the handle 47 is slidable and is 'ofsuch size and shape as to completely cover the opening 44.

It Will thus be seen that the fumes have free passage through my device under desirable normal Working conditions but that upon the ignition of the fumes the fume control cover is released and is given an impact blow to overcome any inertia it may have due to the deposit and accumulation of gummy and sticky matters upon the pivotal increasing the efiectiveness of the jointure, although this particular element of operation is not always necessary. By impact we mean a sudden blow delivered to the closure cover caused by the impact of a falling body.

We do not limit ourselves to the particular size, shape, number or arrangen'ient of parts as shown and described, as these are given simply as a means for clearly describing the device of our invention.

lVhat We claim is In a mechanical fire-arresting device, in

combination, a fume conduit; a gravity operative closure for said conduit; a Weighted means retaining said closure from across the conduit, the Weight being spaced from the closure, and fusible means suspending the Weight, the melting of Which Will cause the Weight to fall upon the closure, the closure being thus released to close the conduit.

Signed at New York city in the county of New York and State of New York this 22nd day of August, 1923.

ROBERT S. PERRY. ARNO W. KARNOPP. 

